Features Durable Material: Screen printed hinge clips, also known as butterfly clips, are made of heavy duty zinc alloy. It has the characteristics of easy to use, sturdy and durable, and long service life. Easy to Use: Easy to install, screws included, provide precise control and precise registration, with a powerful locking function for perfect screen registration. Loose pins for quick screen removal. Perfect Registration: They are used to fix the screen when printing. These fixtures also feature positive locking for perfect registration. They feature wide thumbscrews that hold the clamps securely to the frame. Wide Application: This screen printing hinge clamp is used to hold the screen frame while printing. For securing your screen frame to a table or work surface. For beginners, new beginners learn how to screen print. It is one of many must-have tools for screen printing and is very popular with beginners. Easy Installation: Take two points on a straight line, install butterfly clips, install one or more pairs in parallel as needed, perfect registration can be achieved by 4 screws. Features: 1.This screen printing hinge clamps is used for fixing screen frame when it is printing 2.Feature a wide-wing thumbscrew for firmly fastening the clamp to the frame. 3.Use to secure your screen frame to a table or work surface. 4.These clamps also feature positive locking for perfect registration. 5.Easy to install and positive locking for perfect registration. Specification: Material: Stainless Steel Weight: 401g Quantity: 2pcs Color: Silver Surface Treatment: Color-plated zinc Size: 85*85*60mm/3.3*3.3*2.4in Package Includes: 1 pair x Butterfly Hinge Clamp Note: 1. Please allow 1-3mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List